Cutting edge ring and data centre: what they have in common

1. Step 1. Cutting edge ring — is part of — Tunnelling shield. The cutting edge of the shield.
2. Step 2. Tunnelling shield — uses — Hydraulic cylinder. The shield was pushed forward by jacks.
3. Step 3. Hydraulic cylinder — is part of — Concrete pump. Hydraulics.
4. Step 4. Concrete pump — uses — Concrete. It pumps concrete.
5. Step 5. Concrete — is material for — Data centre. The building is concrete.

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